Chop onions into thin slices.
Add salt to the onions and leave them for 10 minutes. This softens the onions and brings out their juices.
Mix all the ingredients except oil to make a thick batter. (Add little water, if necessary)
Heat the oil in a kadhai or pan. Make small flat balls of the batter and put them into the oil gently.
Fry till the fritters are golden. Drain on paper towels.
Serve hot with mint chutney or ketchup.